Lively and Reynolds, who are parents to daughters James and Inez, were in the audience to see Swift perform at Massachusetts' Gillette Stadium on Saturday. While at the show, the couple freaked out when they heard 3-year-old James' voice play at the start of the song "Gorgeous."

In a video captured by a fan at the show, Lively and Reynolds were clearly thrilled that their child was part of the concert. The mother of two was particularly enthusiastic as she jumped up and down while recording with her phone.